1986 EZ GO rear end leak

[Edgenterprises]

Hey guys - new here.

Just got a golf cart with a blown head gasket. Rebuilt it, ported, polished, shaved the head .025" new piston, rings - all good.

Problem I am having is the rear end is leaking from the pinion seal. I replaced the pinion seal - still leaking. Has anyone run into having a clutch diameter too small causing a leak from the pinion seal?

According to the specs on the National seal book, the pinion seal #472164 has is for a 1.750 shaft. Any idea what the tolerance on the 1.750 should be. I am thinking I am going to have to remove the clutch again and measure that diameter that is supposed to shut-off on the seal and also make sure that there the pinion bearing isn't shot.

I machined a seal driver and everything for the install and it went fine - but it is still leaking.

Any help would be great.

Thanks guys.